In announcing their Windows 10 platform would go on sale this Summer, Microsoft also announced they were working on a few tests in cooperation with Xiaomi. More to the point, Microsoft was testing Windows 10 with “power users” of Xiaomi’s Mi 4 handset — which runs Android. The world thought little of it; tests like these happen often, right? Maybe not these kinds of tests. According to a new report, Microsoft is looking to replace Android with Windows 10 — on Android devices.